How to make a copy and remove all protected ranges from the copied sheet

Question

What I want to do is

Make a copy of the sheet and remove all protected ranges from copied sheet.

var ss = SpreadsheetApp.getActiveSpreadsheet();
var timezone = "GMT-5"
var timeformat = "yyyy-MM-dd"
var date = Utilities.formatDate(new Date(), timezone, timeformat);

var file = DriveApp.getFileById(SpreadsheetApp.getActiveSpreadsheet().getId()).makeCopy(date + " " + ss.getName());

var editors = DriveApp.getFileById(SpreadsheetApp.getActiveSpreadsheet().getId()).getEditors();
  for (var i = 0; i < editors.length;i++) {    
      file.addEditor(editors[i])    
  }

  var viewers = DriveApp.getFileById(SpreadsheetApp.getActiveSpreadsheet().getId()).getViewers();

  for (var i = 0; i < viewers.length;i++) {    
      file.addViewer(viewers[i])

this is what I'm doing to make a copy of the sheet.

Answer 1

Looks like all you already have the copying part done, with file being the handle of the copy. All that remains to do is to open the file with SpreadsheetApp and then use the methods of Protection class:

var ss = SpreadsheetApp.open(file); 
var protections = ss.getProtections(SpreadsheetApp.ProtectionType.RANGE);
for (var i = 0; i < protections.length; i++) {
  protections[i].remove();
}